Currently we use the "map_files/%p-%p" format, but actually it should
be "map_files/%lx-%lx".

The kernel could handle both formats, but recently Alexey Dobriyan fixed
the kernel and it accept only the second format.
Signed-off-by: Andrei Vagin <avagin@virtuozzo.com>
Acked-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Andrei Vagin <avagin@virtuozzo.com>